Improvement in base-burning stoves



- Patented April 4, 1865.

S. B. SEXTON.

Base Burning Stove.

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S. B. SEXION, OF BALTIMORE, MARYLAND.

IMPROVEMENT IN BASE-BURNING STOVES.

Specification forming part of Letters Patent No. 47,136, dated April 4,1865.

clear, and exact description thereof, reference being had to theaccompanying drawings,

making a part of this specification, in whieh Figure l is a frontelevation of a stove having my improvements applied to it. Fig. 2 is =2transverse section taken in a vertical plane .hrough the stove ofFig. 1. Fig. 3 is a longitudinal section taken in a vertical planethrough the stove. Fig. 4 is a horizontal sec tion through the uppermostchamber of the stove. Fig. 5 is a horizontal section through thefire-chamber, taken below the coal-supply cylinder.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to that class of stoves which have a verticalsupply-cylinder arranged within them for receiving coal and keeping up acontinued supply thereof to the fire-chamber, and which are commonlydesignated base-burning stoves, for the reason that combustion takesplace at the base of said coal-supply cylinder.

The main object of my invention is to so construct stoves of this classthat the gas which is generated within the coalsupply cylinder will beexposed to the draft of the main fine and carried off, whether the topof said cylinder is opened or closed, as will be hereinafter described.

Another object of my invention is to provide for conducting the productsof combustion directly from the upper end of a chamber surrounding asuspended coal-supply cy1-- inder down into the base of the stove, andthence into the directdraft pipe, as will be hereinafter described.

Another object of my invention is to provide for supporting theilluminating windows or doors of the cylinder which surrounds thefirechamber upon a led e or base, which is formed upon and whichprojects without the circumference of said cylinder, for the purpose offa cilitatin g the application of said doors or windows to the stove andgiving prominence to them, as will be hereinafter described.

To enable others skilled in the art to make and use my invention, I willdescribe its construction and operation.

The base A of the stove has a chamber, 0!, extending along the sides andback of the ashchamber 1), and which is separated from the latterchamber by the vertical partition a. (Shown in Fig. 2 and 3.) From theouter chamher, a, three pipes, c c and d, ascend, the two formerconnnunicating with the top of the chamber B, which surrounds thecoal-supply cylinder 0, as clearly shown in Figs. 1 and 2.

The pipe (1 extends up from the back part of the chamber, a, and formsthe direct flue for conducting the pioducts of combustion into thechimney. This vertical fine (I has a branch flue, d, leading into itfrom a chamber, D, which surrounds the funnel D in the uppermost chamberof the stove. The flaring sides of the funnel D terminate at their basein an opening, which leads into the top of the coal-supply cy linder G,and this funnel is closed on top by the cover-lid D which is removedwhen it is desired to supply coal to the cylinder (J. The chamber D alsocommunicates with the coal'supply cylinder 0 through the perforations ce e, which can be closed, when desired, by the circular perforated valvef, the

handle j" of which projects through a horizontal slotted opening in thecylindrical case D as shown in Figs. 1 and 3. If desirable, 0blon'gopenings may be made through the cone or funnel D at its contracted end,as shown in Figs. '2 and 3, for the purpose of allowing accumulated gasto escape into the chamber D when the perforations e e e are closed bythe damperf, or during the introduction of coal into thesupply-cylinder. These openings through the funnel create a draft abovethe lower end of said funnel and carry off into the chamber D and mainflue d any gas which might escape above the lower end of the funnel. Bymeans of the perforations leading into the chamber D, as abovedescribed, there is a strong suction created at the top of the cylinder0, which not only prevents the gas from this cylinder escaping into theroom when the top D is opened, but prevents the gas from insinuatingitself through the erevices of the stove, and thus escaping into theroom when said cover is in place. This arrangement also enables me toventilate a room or check the tire when the cover D is open.

The dcsccnding fines c 0, arranged on each side of the stove, cause theproducts of combustion rising above the fire-chamber E to ascend to thetop of the chamber B before escaping, whence they are conducted throughsaid flues into the chamber (0, thus heating this chamber or base of thestove before they finally escape through the fine (I. By this arrangement the heat is distributed throughout the entire stove, from the topto the bottom, and very little is allowed to escape into the chimney.

In Figs. 1, 3, and 5 I haye represented illu minating windows or doorsapplied to the front part of the semi-cylinder F, which partiallysurrounds the firechamber E. These doors or windows Gr are adapted forreceiving mica lights, and they may be applied so that they can beopened by sliding them back. The doors or windows G occupy tle frontopening made in the semicylinder F, and expose a light from one-half thediametl r thereof, or all around, as may be desired.

To support these doors or windows, and at the same time to set them outsome distance from the fire-chamber, I form a semicircular base orprojecting flange, it, upon the lower edge of the opening through thecase F, and also apply a flange, "i, to the projecting rim of the uppercylinder, as shown in Figs. 2 and 3, and to these parts lb *5 I applythe doors or windows G G by means of contrivances which may allow thedoors to, slide on their semicircular ways, as shown in Figs. 2 and 3.By applying sliding'doors, to the stove, as I have described, they canbe opened at pleasure, and the interior of the fire-chamber easily gotat for cleaning it out, or for other purposes.

In practice, the (0 wer D may be stationary, or in the form of an urn,and a chute leading from a door, I), through the chamber D into thefunnel D, may be used for feeding the coal into the magazine 0. Thisdoor should be so isolated from the circulating-space by the chute thatthe products of combustion will not enter the room when the door isopened.

In Fig. 2 I have represented a supplemental grate, S, applied to thebottom of the supplycylinder 0 by means of books or other fastenin gswhich will admit of its being removed at pleasure. This grate S is to beused when a small fire only is required, or when it is not desired tomake a fire in the chamber E.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A base-burning store which is so constructed that the gas which isgenerated in the coal-supply cylinder G can be conducted off through thetop plate of said cylinder and around the feed-opening thereof atpleasure, substantially as herein described.

2. A chamber, D, with a valvular bottom and escape-pipe (1, arrangedover tle coalsnpply cylinder, or magazine of a base-burning stove,substantially as described.

3. The draft-fines c 0, when carried out of the top of the chamber B,and conducted into a chamber, a, having an ascending flue leading out ofit, substantially as described.

4. The combination, in a base-burnin g stove, of the projecting ledge h,formed on the lower edge of the opening through case F, and a flange, i,projecting from the base-rim of the cylinder surrounding the chamber B,substantially as described.

5. The application of a supplemental grate, S, to the magazine of abaseburning stove, substantially as described.

S. B. SEXTUN.

Witnesses:

R. T. CAMPBELL, E. SCHAFER.

